sailer



A. G. SAILER.

METAL FORMING MACHINE.

APPLICATION FILED DEC.1.3| 1911.

Patented Nov. 18, 1919.

L82L858m 3 SHEETS-SHEEI'1.

A. G. SAILER.

METAL FORMING MACHINE.

APPLICATION FILED DEC.13, 1911.

Patented Nov. 18, 1919.

3 SHEETS-SHEET 2.

Inventor; flriizar" a Sale];

A. G. SAILER.

METAL FORMING MACHINE.

APPLICATION FILED DEC. 13, I917.

MEQJAfiESw Patented NOV. 18,1919.

3 SHEETS-SHEET}.

'onirnn srarns PATENT ornron I illt ARTHUR G. SAILE R, 0F M ASSILLON, OHIO, ASSIGNOR TO TI'IE SAILER 8EMELVINQ IVIANUFACTURING" COMPANY, OF MASSILLQN, OHIO, A CURPORATION OF OHIO.

METAL-FORMING MACHINE.

Specification of Letters Patent.

Patented NOV. 18, 1919.

Application filed December 13, 1917. Serial No. 206,866.

a citizen of the United States,'residing at Massillon, in the county of Stark and State of ()hio, have invented a new and useful Metah Forming Machine, of which the following is a specification.

This invention relates to metal forming machines and more particularly to ma chines of this class need in lo ning wire into what are connnonly termed lock flashers, the object being to provide a row chine that will form the wire into a epiral coil and sever thelielires of the spiral thus forming split rings, the severed portions of which are spaced apart.

Another object is to guide the helices or washers from the point at which the) are covered from the circuiuvolution oi. wire to the (co-acting members of a forming die, where the ends of the washer adjoining; the split are stamped to prmluce a sharp edge upon each of the said ends thereby insuringa positive gripping client when the was-sheik is en'iployed to lock a nut upon a thread.

l i ith these objects in view the invention consists in the novel construction and arrangement oi parts, hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the ap pended claims, it being understood that v art oiis coanges in the form, proportions, size and minor details of construction may he made within the scope of the appendet clain'e, witl'lout departing from the spirit or sacrificing vention.

in the drawings l igure is a front eh--vatiou o5" luv urachiue with the guide for Ctl'l \'lllg the wire up to the mandrel, shown in section.

Fig. 2 is an enlarged front view of the mandrel and coiling chain with the wire guide shown in section.

Fig 3 is a sectional viewtah'en on the line c e, of Fig.

Fig, 4L is a l'raginentary detail perspe tivc oil a portion of the head il"()l."C'UI'1yl11 the roller chain for coiling; the wire.

Fig. 5 is a fragmentary view of a portion of the roller chain for coiling the wire,

Fig". is a side elevation on an enlarged ecale of the end of the guide tube with the feeding lIlQOllEtlllSll'l for carrying the washer any of the advantages oi the inportion '15 by the sleeve 19.

out on to the lower u'ieniber oi. the forming d1es.

Fig. 7 1s a section taken on line 7-7, of F 1g. 6.

Flg. 8 1s a section taken on the line 88, of Fig. 6.

111g. 9 1s a fragmentary sect1onal vlew through the mandrel looking in the direction of the guide tube with a convolution of wire shown about the mandrel.

Fig. 10 is a detail showing the position of the helix at the instant that the cutting tool descends to sever it from the coil.

Fig. 11 is a sectional view through the guide tube showing a washex in position therein.

Similar numerals 01 reference indicate corresponding parts throughoutthe several. figures of the drawings.

The base or frame 1 of my machine has mounted thereon the standards or guidcs f2 and 4t and the bearing blockf), all olwhich are bolted or otherwise secured to the said frame. The shaft 6 which is journaled in bearings formed in the standards 53 and elcarries the drive pulley/7, which is adapted to be driven by means of a belt from a suit able source of power. Mounted within the upright portions of the standard is the vertically reciprocating head 8 having the connecting rod 9 pivoted to its upper poo tion, the said connecting rod, being adapted to coiiperate with the cam '10 keyed to the shaft 6, to produce the vertically reciprocal motion of the head 8. A head 11 similar to the head 8 is mounted between the upright portions of the standards 4: and adapted to slide vertically therein and has a connecting rod 12- and a co-actingf cum 1-lto produce the vertical reciprocal motion of the head 11. The standards 2 and 4, just referred to and their respective heads 8 and 11 and the parts coacting, therewith are all of well known and usual construction. Projecting from the face of the bearing block 5 is an elongated tubular portion 15, which together witli the beating block 5, forms a support for the mandrel 16. A collar 17 with an annular flange 18 is rotatably mounted upon the mandrel and is spaced from the tubular Intermediate the guides in which the head 8 slides is a standard 20, which is bolted orotherwise secured to the base 1. Thestandard forms a support for a bracket 21 upon which is mounted a substantially U-shaped head 22, clearly shown in Figs. 3 and a. A bead or rib 23 extends entirely around the periphery of the head 22 and forms a track or guide for an endless roller chain 24, each roller of which, as shown in Fig. 5, is formed with a central circumferential groove 25 of the same width as the bead 23, and adapted to ride upon the said bead, the outeixflange portions of the roller riding upon the shoulders on the head 22, adjacent the bead. The mandrel 16 is positioned to extend concentrically between the projecting portions of the U-shaped head and to be spaced therefrom the distance of the thickness of the wire which is to be formed plus the diameter of the rollers composing the chain 24. A suitable guide 26 supported in anywell known manner is arranged to guide the wire indicated at 27 up to the point where it will simultaneously engage the mandrel and the roller immediately above the said mandrel, in the chain 24. It is of course understood that power is used to force the wire through the guide 26 and the said guide terminating exactly at the point where the wire is engaged by the mandrel and the roller, there is no possibility of the wire buckling. A spacing member 26 is secured to the side of the Wire guide 26, extending slightly below the said guide and being inclined toward the annular flange 18 upon the collar 17. The free end of the mandrel is cut away, as. at 28, for a half of its diameter as shown in Figs. 2, 9 and 10 for a distance from its end equivalentto the greatest width of one of the helices forming the coil of wire which is formed upon the mandrel in a manner hereinafter to be set forth. Located immediately below the mandrel and adjacent the end thereof is a tube 29, one wall of which is cut away to form a semi-circular opening 30, concentric with the mandrel and spaced therefrom the exact distance of the thickness of the wire, being coiled as clearly shown in 9. Theltube 29 extends vertically for a distance below the mandrel and then curves away from the said mandrel and terminates in a horizontal portion 31 which is secured to the base 1. The tube 29 is formed of two pieces, grooved as at 32, Fig. 11, and

fitted together to produce'a longitudinal slot 34: with the oppositely disposed shoulders 35 against which the disjointed ends of the washer are adapted to engage. It will be readily seen that when the washer has once entered the tube it will be impossible for it to be rotated or twisted in the slightest degree out of the position which the split portion of the washer occupied when the washer entered the tube.

Mounted upon the head 8 and in direct alinement above the cut-out portion 28 of the mandrel is a cutting tool 36, which when the head 8 descends contacts with the last helix of the coil upon the mandrel severing it at the point indicated at A in Fig. 10. As will be seen in this figure the severed helix occupies such a position above the entrance to the tube 29 that when the knife 36 descends to sever it from the remaining convolutions of the coil of wire, it will drop into the tube 29, each of its disjointed ends contacting with a face of a shoulder 35. As previously mentioned and as clearly shown in Fig. 9 the cut out portion 30 in one wall of the tube 29 is spaced from the mandrel the exact distance of the thickness of the wire being coiled so that as the circumvolution is worked along the mandrel toward the tube the helix next to the one to be severed at the next stroke of the knife rests upon the face of the cut-out portion 30, thereby forming a support for the mandrel when the knife delivers the blow to sever the end helix. A supporting block 37 upon which the tube 29 rests, as shown. in Fig. 1, is secured to the base portion 1 and prevents the up-turncd end of the tube from being bent out of position from the blows delivered upon it from the knife 36 through the mandrel and wire contacting with it as just described.

Located adjacent the outlet of the horizontal portion 31 of the tube and in alinement with the said tube, is the lower member 38 of a forming die. the upper member 39 of which is carried by the head 11. Located at the front side of the tube and spaced slightly from the outlet end thereof is a pin 40 which is fitted through an opening 41 drilled in the base 1 and is adapted to rotate therein. An annular shoulder 42- upon the pin rests upon the upper face of the base and threads upon the lower extremity of the pin are adapted to receive a nut 44, a washer 45 being interposed between the under side of the base and the. nut. A finger 46 extending at right angles from the pin 40 and secured therethrough is adapted to swing through a slot 47 in the side of the tube for a purpose to be here.- inafter set forth. The pin 40 carries a head 48 and a wrist pin 49 extends upwardly from the head near its periphery and is adapted to receive one end of a pitman link 50. the other end of which is connected to a similar wrist pin 51 upon the head of a pin 54. The pin 54; is mounted to rotate in the same manner as the pin 40 just described and carries a finger 55 which is adapted to operate through a slot 56 in the same manner as the pin 46, operating in the slot 47. The upper end of the wrist pin 51 projects above the pitman link 50 to receive one end of a second pitman link 57, the opposite end of which is connected to a crank arm 58. The crank arm 58 is keyed to a vertical shaft 59 which is journaled in bearings secured to one member of the standard t and at the upper end of the said vertical shaft is a bevel pinion 60, which meshes with a. second bevel pinion 61 mounted upon the shaft 6. The pinions 60 and 61 are of exactly the same size, thereby causing the shaft 59 to be rotated with actly the same speed as the shaft 6. Extending upwardly from each side of the lower member 38 of the forming die are guide flanges 62 and located adjacent the said member 38 is an electric magnet 64-, the top surface of which is in horizontal alinement with the upper face of the 1116111- ber 38. The electric magnet is insulated from the member 38 and the base 1 and has the usual binding posts for connecting the circuit wires, one of which runs to a suitable source of power and the other to one terminal of a switch 65. The other terminal of the switch is connected to the source of power thus completing the circuit line. The switch may be of any well known spring type and its contact points are adapted to normally remain apart thus leaving the circuit open, but a cam 66 mounted upon the shaft 6 is arranged to wipe over the spring member of the switch, forcing it against the other contact, thus closing the circuit and allowing the current to flow through the magnet which thereby becomes energized for the period during which the switch is closed. It is thus seen that at each revolution of the shaft 6 the magnet will be energized through the closing of the circuit by the cam 66. An opening is formed through the base 1 immediately adjacent the end of the magnet and connects to a discharge tube 67.

The operation of my machine will be as follows: The wire 27 being forced in through the guide :26 emerges from the said guide and innnediately engages one of the flanges of a roller in the chain 24, the other flange of the roller will, at the same instant come in. contact with the face of the rotatable collar 17, the annular flange 18 of which fits within the groove 25 of the said roller. It is thus seen that it is impossible for the roller to move sidewise or be twisted, and it therefore begins to move backwardly and downwardly around the inside of the head 22 due to the force of the wire, thus causing the chain to move in the same direction and bending the wire around the mandrel. hen the end of the wire reaches a point at the vertical center of the bottom of the mandrel it will continue to follow the face of the mandrel as it turns upwardly. It then comes in contact with the inclined w re spacer 26 which forces it slightly to one side giving it the desired pitch to produce the helices, the following wire being forced in continuing to coil in the same manner. A. spiral circumvolution is thus formed on the mandrel and as each new convolution each descent of the knife 36 carried by the-i said head the end helix is cut off at the point A. in Fig. 10 and drops into the tube 29. Tillie speed of the wire feeding between the rollers and mandrel is regulated exactly with the rotation of the shaft 6 so that the knife 36 descends each time a new helix is formed on the spiral.

The severed ends of the helix engage the faces of the shoulders 35 as the washer enters the tube 29 the washer sliding by gravity down through the vertical portion of the tube and around the curve and out into the horizontal portion 31 of the said tube, each following washer dropping into the tube will force the'washer ahead of it along through the tube until the one that first entered arrives at the position shown in dotted lines in Fig. 8. The shaft 59 through the medium of the pinions 60 and (31 will make one revolution at each revolu tion of the shaft (3, the crank arm 58 at the lower end of the shaft 59 causing the head 5-201? the pin 54rto be rotated through the pitman link '57. The pitman link 50 con; necting from the wrist pin 51 to the wrist pin 4:9 upon the head d8 of the pin 1:0 causes the pin -10 to be rotated at exactly the same speed as the pin 5-1- and since the wrist pin 51 is at substantially the diametrically op posite side of the head which carries it that the wrist pin 1 9 is, the pin 40 will rotate in the opposite direction of the pin 5-1., the direction of rotation being indicated by the arrows on Fig. 8. The fingers 4:6 and 55 extending from the pins 10 and 5% re-' spectively, will in like manner be rotated in the direction of the arrows, describing a semi-circle within the tube in their travel. through the slots 17 and 56. It will now be seen that the washer occupying the position previously referred to and shown i dotted lines in Fig. 8, will be engaged by the fingers 4:6 and 55 as they are rotated.

to enter the tube as just described and the rotary motion continues the washer will be pushed along the tube and released at the end in the position shown by the washer indicated by full lines in Fig. 8 when the fingers will swing away, leaving the washer with its split portion lying as shown upon the lower memberof the forniing die in position to be stamped and with approximately the other two-thirds of the washer lying upon the face of the electric magnet. It is now seen that since the shafts 6 and are rotating at the same speed that each time that the feeding mechanism revolves to push a Washer out at the exit of the tube another washer is cut off and dropped into the tube causing the next succeeding washer to the one just fed out upon the forming die to be moved forward 1nto position to be engaged by the fingers of the mechanism upon their next rotation. The crank arm 58 is set at the proper angle to bring the feeding fingers to release the 'asher upon the face of the forming die at the instant the knife 36 descends to drop another washer into the tube. It is, therefore, obvious that the washer is moved into position to be next engaged by the feeding fingers when the fingers are in what might be termed the end of their stroke or revolution. 7

The cam 66 at the end of the shaft 6 is so positioned that the instant the feeding fingers have placed the washer in the full line position previously referred to upon the face of the electric magnet and with its split portion lying on the lower member of the forming die, the switch 65 will be engaged by the said cam to close the circuit thus energizing the magnet and holding the washer upon the die imtil the head 11 carrying the upper portion of the die descends to stamp the washer. It will be obvious that since the head 11 is reciprocated through the medium of a cam mounted upon the shaft 6 it is timed to descend at the exact instant that a new washer has been placed to be stamped. As soon as the head 11 starts upwardly after stamping the washer the cam 66 reaches the end of its travel over the spring member of the switch 65 releasing the said spring member, breaking the circuit, thereby disenergizing the magnet and allowing the next washer pushed out by the feeding fingers to push the washer just stamped off of the magnet and into the entrance to the tube 67 where it falls into a suitable receptacle.

I have described the head about which the roller chain is adapted to be moved as a U-shaped head but I desire to be not limited to this specific construction since any head of bifurcated formation that will enable the mandrel to be placed concentrically between the said bifurcations and the said head may be employed. In the drawings I have also shown a well formed at the base of the ma chine and located directly beneath the head and through which the idle portion of the roller chain is adapted topass. When the machine is being operated to coil particularly hard wire, this well may be filled with oil to a proper height for the chain to dip therein, thus eliminating the possibility of the chain becoming hot through friction.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is i 1'. In a machine for forming wire into lock washers, the combination of a U-shaped head, a mandrel concentrically disposed between the arms of said U-shaped head, an endless chain formed of rollers adapted to travel upon the periphery of the said head and to engage the wire and form it into a spiral coil about said mandrel, a forming die, means for severing the helices of the said spiral and means for guiding the said severed helices and placing them between the co-acting members of the forming die, means for holding each helix in position between the said members of the forming die until the said die has been operated to form positive locking points upon the said helix.

2. In a machine for forming wire into lock washers, the combination of a U-shaped head, a mandrel concentrically disposed between the arms of the said U-shaped head, means upon the said head for forming wire into a spiral coil upon the mandrel, means for severing the helices of the said coil, one at a time, means for guiding the severed helices in the succession in which they are severed from the spiral, a forming die,

means for feeding the helices one at a time from the said guide member to the lower member of the forming die and means for holding each helix in position upon the lower member of the said forming die until the upper member has been operated to form positive locking points upon the said helix.

3. In a machine for forming wire into lock washers, the combination of a U-shaped head, a bead formed upon the periphery of said head, an endless chain of forming rollers adapted to operate about the periphery of said head in engagement with said bead, a mandrel concentrically disposed between the arms of said U-shaped head, means for guiding wire into forced engagement between the said mandrel and the said chain of forming rollers, the said wire being adapted to move the said chain upon the head and about the mandrel to form a spiral of coiled wire upon the said mandrel, means for severing the helices of the coil into washers, a forming die, means for guiding the washers in a predetermined position one at a time and placing them upon the lower member of the forming die, means for holding the washer in said position on the lower member of the forming die until the co-acting member of said die operates to form posi tive locking points upon the said washer.

4. In a machine for forming wire into lock washers, the combination of a U-shaped head, a centrally located bead upon the periphery of the said head, an endless chain composed of rollers, each having a centrally arranged annular groove, the said chain being adapted to move about the periphery of the head, the bead upon the said head being adapted to engage the annular groove in the rollers of the said chain and to form a guide for said chain, a mandrel concentrically lotlti cated between the arms of the said head and spaced from the said rollers comprising the gagement simultaneously with the mandrel and a roller in the said chain, the said chain being adapted to be moved upon the pe riphery of the head and about the said mandrel to coil the wire about the said mandrel, a wire spacer carried by the said guide and adapted to be engz-iged by the wire and to defleet it and to cause the wire to form a spiral of spaced helices upon the mandrel, a guide tube adj aeent the end of said mandrel, means for severing the helices of the said spiral into washers, the said washers being adapted to enter one end. of the said guide tube, said guide tube being provided with means for preventing concentric rotary movement of the said washers, a forming die, means for feeding the said washers successively from the opposite end of the said guide tube and placing them in posit-ion upon. the lower member of the forming die, means for holding the washer in said position upon the lower member of the forming die until the co-acting member of the said die operates to form positive locking points upon the said washer.

5. In a machine for forming wire into lock washers, the combination of a head, a pair of forwardly projecting horizontal arms formed integral with said head, a centrally located outstanding bead about the periphery of said head and horizontal arms, rollers, each having a centrally located annular groove forming an endless chain adapted to move about the periphery of the said head and said horizontal arms, the outstanding peripheral bead upon the said head and horizontal arms being adapted to fit the grooves in the said rollers and act as a guide therefor as the said chain is moved around the periphery of the said head and arms, a mandrel concentrically located between the said head and horizontal arms and spaced from the said chain thereon, a guide adapted to bringwire into forced engagement with the said mandrel and one of the rollers of the said chain, the said wire being adapted to be forced within the space between the said mandrel and the said rollers and to move the said chain to bring successive rollers thereof into engagement with the said wire and to coil about the said mandrel in the form of a spiral, means for severing the individual helices of said spiral into washers, a guide tube located adjacent the end of the said mandrel and adapted to re ceive the said washers in the order in which they are severed from the spiral, said guide tube having oppositely disposed longitudinal shoulders within the said tube for engaging the cut ends of the said washer to hold it against axial rotation. while the washer is within the said guide tube, forming die means adjacent the outlet to said guide tube for feeding the said washers singly from the said guide tube to the face of the lower member of the forming die and means for holding each washer temporarily in position upon the face of the lower member of the forming die until the upper member of the said die has descended to stamp positive locking points upon the said washer.

6. ln a machine for forming wire into lock washers, the combination of a U-shaped head, a mandrel concentrically disposed be tween the arms of the said ttshaped head, means upon the said head for forming wire into a spiral coil upon the mandrel, means for severing the helices of the said coil one from the other into lock Washers, a guide tube arranged adjacent the end of the said mandrel and adapted to receive the said washers in the order of trier severance from the said spiral, said guide tube having oppositely disposed centrally located shoulders extending longitudinally of said guide tube and adapted to be engaged by the cut ends of the said washers to prevent axial rotation thereof, a forming die, fingers rotatably mounted adjacent the outlet to the said tube and adapted to swing within the said tube and to engage each ofthe said washers singly and to feed it from the outlet to the said tube with its split portion lying upon the face of the lower member of the forming die, means for temporarily holding the washer in said position with its 100 split portion upon the face of the lower member of the forming die until the coacting member of the said forming die has descended to stamp a positive locking point upon the outside of each of its split ends.

7. In a machine for forming wire into lock washers, the combination of a bifurcated head, a mandrel concentrically arranged between the said bifurcations and the said head, means upon the said head for 110 forming wire into a spiral coil, means for severing the helices of the said spiral coil into lock washers, a guide tube arranged adj acent the end of said mandrel and adapted to receive the said washers in the order of 115 their severance from the said spiral said guide tube having means within the said guide tube for engaging the split ends of the said washers to prevent axial rotation thereof, a feeding mechanism located adjacent the 120 outlet to the said guide tube and adapted to feed each washer therefrom singly and place each of them with their split portion in position upon the face of the lower member of a formingdie, an electric magnet 10- 125 cated adjacent the said lower member of the forming die and adapted to receive thereon the portion of the washer opposite the said split and means for timing the flow of current to energize said magnet to hold the said 13 washer in position upon the said lower member of the forming die until the upper member thereof has descended to stamp the said Washer.

8. In a machine for forn'ling Wire into lock Washers, means for coiling the Wire, means for severing the helices into Washers, a guide tube located beneath said severing means to receive the Washers as they are severed from the coil and shoulders Within said tube for holding the Washers against axial rotation While Within the tube.

9. In a machine for forming wire into lock Washers, a guide tube adapted-to receive the said Washers, and shoulders Within the said tube for holding the washers against axial rotation While Within the said tube.

10. In a machine for forming Wire into lock Washers, a guide tube adapted to reoeive the said Washers, oppositely disposed centrally located shoulders extending longitudinally of said guide tube and adapted to be engaged by the cut ends of the said washers to prevent axial rotation thereof While the washers are passing through the said tube.

In testimony that 1 claim the above, I have hereunto subscribed my name.

ARTHUR G. SAILER. 

